Simulation of the Consequences of Different Fire Regimes to Support Wildland Fire Use Decisions

Fire Ecology

Table 2 Transition probabilities for PVGs 7 and 10.

	Annual probability
State class (Tree size¹/canopy closure²)	Stand-replacing fire	Non-lethal fire	All fire
PVG7
Seedling/open	0.00162	0.00062	0.00224
Sapling/low	0.00205	0.00020	0.00225
Sapling/moderate	0.00205	0.00020	0.00225
Small/low	0.00205	0.00020	0.00225
Small/moderate	0.00205	0.00020	0.00225
Small/high	0.00225	0.00000	0.00225
Medium/low	0.00184	0.00041	0.00225
Medium/moderate	0.00305	0.00020	0.00325
Medium/high	0.00325	0.00000	0.00325
Large/low	0.00184	0.00041	0.00225
Large/moderate	0.00225	0.00020	0.00245
Large/high	0.00425	0.00000	0.00425
PVG10
Seedling/open	0.00134	0.00066	0.00200
Sapling/low	0.00134	0.00066	0.00200
Sapling/moderate	0.00134	0.00066	0.00200
Small/low	0.00167	0.00033	0.00200
Small/moderate	0.00184	0.00016	0.00200
Small/high	0.00184	0.00016	0.00200
Medium/low	0.00200	0.00000	0.00200
Medium/moderate	0.00200	0.00000	0.00200
Medium/high	0.00200	0.00000	0.00200

¹ Tree size class descriptions as in Tables 1 and 3.
² Canopy closure classes as percent of non-overlapping canopy: open (<10 %), low (10 % to 39 %), moderate (40 % to 69 %), high (>69 %).